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Project by kiefer posted 01-18-2015 11:31 PM 6241 views 83 times favorited 24 comments Add to Favorites Watch

This is an updated version of my box clamp that I previously posted .
The improvements are the clamping arms which enclose the strap an is also reduced to two slots which makes the strap exit on the ouside where the clamp can grab the strap and I also added a dowel to act as a hinge point to keep the arms from sliding past each other during clamping .!!

The second improvement is a strap guide which is comprised of two washers on each of the eight pins this is to centre the strap and accomplished by changing the upper and lower spacer size .

The third change is the inside corner opening enlargement which now makes it possible to clamp finger jointed and dove tail joint boxes by providing the necessary clearence .( See picture and picture #6 )

The fourth improvement is I found a way to make the strap ends the same size as the the rest of the belt and make it easy to insert into the clamp arm slots by applying a bead of CA glue about 1/2” wide and letting it dry and then trimming the end by cutting across the strap through the glued area .This gives me a nice and smooth and stiff end which is easy to insert into the slot .

All changes are made to the existing parts except for the clamping arms which I made new but could have used the existing also .

Thanks for looking


-- Kiefer

24 comments so far

View shipwright's profile


8166 posts in 3002 days

#1 posted 01-18-2015 11:46 PM

I made a set and they worked very well but I did have a few issues that detracted from the pleasure of using them.
You have cleared them all up in this update.
Mine are already altered, some alterations are my own and a couple are Klaus’s suggestions but they are now very easy to use and reliable clamps.

Thanks buddy.

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese!

View Woodbridge's profile


3594 posts in 2622 days

#2 posted 01-19-2015 12:05 AM

Very nice improvements to version 1. Definitely on my to do list. Thanks for sharing this.

-- Peter, Woodbridge, Ontario

View tyvekboy's profile


1824 posts in 3217 days

#3 posted 01-19-2015 12:29 AM

Good job. Great improvements.

Thanks for sharing.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View CrazyAce's profile


18 posts in 1437 days

#4 posted 01-19-2015 12:45 AM

Very nicely done sir!

-- -CrazyAce

View Jim Jakosh's profile

Jim Jakosh

21743 posts in 3309 days

#5 posted 01-19-2015 12:48 AM

Way to go,Klaus. I still have these on my to do list.

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View jbschutz's profile


548 posts in 2895 days

#6 posted 01-19-2015 12:48 AM

Great clamps, Klaus…...I gotta make me a set of these. Is it possible for the sides to slide by each other when you are doing butt joints?

-- jbschutz

View  woodshaver Tony C   's profile

woodshaver Tony C

6230 posts in 3557 days

#7 posted 01-19-2015 01:02 AM

Very nice Klaus, This will be on my to do list for sure. Thanks for sharing!

-- St Augustine FL, Experience is the sum of our mistakes!

View CharlieK's profile


581 posts in 3997 days

#8 posted 01-19-2015 01:40 AM

Hi Klaus,

A great box clamp can come in very handy. What kind of joint are you using in the last photo? It looks like a butt joint in the photo, but from your text it sounds like it is either a finger joint or a dovetail.

Thanks for sharing!

-- Adjustable Height Workbench Plans

View kiefer's profile


5622 posts in 2871 days

#9 posted 01-19-2015 01:49 AM

Thanks all for your supporting comments !
Paul thanks for your inspiration on some of the updates it always helps .

For butt joints you could add a board to the ends as a spacer with the new corner or use the original corner design . (see picture )


-- Kiefer

View kiefer's profile


5622 posts in 2871 days

#10 posted 01-19-2015 01:52 AM

Sorry for the picture but I am clamping a finger/box joint .
See comment above for butt joint .


-- Kiefer

View doubleDD's profile


7897 posts in 2247 days

#11 posted 01-19-2015 03:22 AM

I made a set similar to your first version but haven’t used them or really tested them. Side tracked on family to do projects. Thanks for the update improvements. I will hopefully get to them soon. Thanks Klaus.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View BigFoot Products Canada's profile

BigFoot Products Canada

711 posts in 3597 days

#12 posted 01-19-2015 03:31 AM

Brilliant Idea… I am going to cut the parts out on my Laser.

View Woodknack's profile


12431 posts in 2584 days

#13 posted 01-19-2015 03:55 AM

Kiefer I think you should write a book. A woodworking publisher would be crazy not to snatch it up.

-- Rick M,

View DocSavage45's profile


8725 posts in 3046 days

#14 posted 01-19-2015 04:55 AM

Rick’s right! Everyone. “Book, Book,Book!” A lot on my to do list. One more item. I’m working on a sled.

Klaus you are Always Thinking! LOL!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View Jim Rowe's profile

Jim Rowe

1059 posts in 2516 days

#15 posted 01-19-2015 08:54 AM

Excellent up date. Added to “To Do” List.

-- It always looks better when it's finished!

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